How to Make a Post Driver

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The most difficult part of installing a new fence is setting the posts. Wooden fence posts, commonly used for older fences, require holes excavated by hand or with a power auger. Modern steel "T" fence posts eliminate the need for digging. Instead, they are driven into the ground with a hand or power post driver. If you are fencing a garden, or other small area, making your own hand post driver is easy and inexpensive.

Things You'll Need

  • 3-foot section of 3-inch I.D. steel pipe, threaded on one end
  • Threaded cap for pipe
  • Two large pipe wrenches
  • Mild corrosive
  • Thread the cap onto the pipe.

  • Tighten the cap. Fit one pipe wrench just below the threaded end of the pipe on the left-hand side, and fit the second pipe wrench on the right-hand side of the cap. To get the best leverage on the wrenches, there should be no more than a 15-degree arc between the two handles. Pull the handles of the wrenches together. Repeat until the cap is tight.

  • Turn the capped pipe upside down, and apply a mild corrosive to the seam between the cap and the pipe. For this application, a commercial thread adhesive or a carbonated cola drink poured over the exposed threads will work.

Tips & Warnings

  • Applying a thread adhesive to your post driver will prevent the cap from working itself loose while driving posts.
  • Use heavy-gauge steel only. Driving posts will put a great deal of stress on the driver. Many low-cost post drivers will fail after only a few posts.
  • Welding handles made of rebar above the center of gravity on your driver can make driving large numbers of posts easier.
  • A short section of an old drive shaft, if you can find one, will work well as a post driver.

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References

  • Photo Credit Old wooden posts and barbed wire farm fence against blue sky. image by GoodMood Photo from Fotolia.com
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